single test

例句：

1. 1.She is a single mother who works hard to provide for her child.
   她是一位辛勤工作的母亲，独自抚养孩子。
2. 2. The single man was very lonely until he met the woman of his dreams.
   这位单身男士非常孤独，直到他遇到了梦中的女人。
3. 3. The single people in the park were enjoying a peaceful evening walk.
   公园里那些独行的人们在享受宁静的夜晚散步。